Stove-damper



J. W. MADDEN.

STOVE DAMPER.

APPLICATION FILED 050.31.1919.

Patented Oct. 19, 1920.

UNITED STATES PATENT OFFICE- JOH W. MADDEN, or rrr'rsrmnn, MASSACHUSETTS.

STOVE-DAMPER.

Specification of Letters Patent. .Patnted Oct 19 1 920 Application filed December 31, 1919. Serial No. 348,539.

To all whom it may concern:

Be it known that 1, JOHN W. MADDEN, a citizen of the United States, residing at Pittsfield, in the county of Berkshire and State of Massachusetts, have invented certain new and useful Improvements in Stove- Dampers, of which the following is a specification.

This invention relates to the dampers employed in smoke fines of various kinds, more particularly to the smoke fines of kitchen ranges and stoves, and has for one of its objects to provide a simply constructed device whereby the damper may be actuated from any required distance and in any required direction.

With these and other objects in view, the inventionconsists in certain novel features of construction as hereinafter shown and described and then specifically pointed out in the claims, and in the drawings illustrative of the preferred embodiment of the invention- Figure 1, is a front elevation of a portion of the upper part of a conventional kitchen range and a contiguous portion of the smoke flue of the range, including the damper, with the improved damper actuating apparatus applied, a portion of the range being broken away to show one of the coupling devices.

Fig. 2, is a side view of the Darts shown in Fig. 1, with the portion of t e range in transverse section on line 2 2 of Fig. 1.

Fig. 3, is a plan view, with the smoke flue in transverse section.

Fig. 1, is an enlarged detached perspective view of the coupling block and its combined set screw and coupling pin.

Fig. 5, is an enlarged perspective view of the bearing block whereby the operating shaft is coupled to the range or other suport. p Fig. 6, is an enlarged detached perspective view of the operating shaft, the coupling rod or crank arm, and the stop pin.

The improved device may be readily adapted without material structural change to dampers of various forms and sizes and it is not desired to limit the invention in this respect, but for the purpose of illustration the device is shown applied to the ordinary damper of the smoke flue associated with a kitchen range, 10 representing a portion" of the flue, 11 the damper, having the usual turning knob 12, and 13 a portion of the back or rearguard which rises above the usual warming oven of a kitchen range. 1

The improved apparatus includes a clip device 141 bearing around the knob 12 and held immovably thereon by a clamp screw 15. One arm of the clip is directed inadvance of the other arm and pivotally united at 16 to the upper end of a rod 17 A second clip device is also provided to be detachably connected to the part 13jof the range or other support, and includes a body 18 having a transverse aperture to retatably receive an operating shaft 19. I

Thebody 18 is forked at the lower end to place by a clamp screw 20.

The body 18 may be modified to any a threaded transverse aperture to receive the threaded end of a bent pin 24, the pin thus serving as a set screw to hold the block .23 in adjusted position on the rod 17.

Attached to the shaft 19 is a crank arm 25 having means such as an eye 26 at its free end to engage the pin 24.

The stop 22 and the crank arm 25 are detachably coupled to the shaft 19, for instance by screw threads, as shown, so that they can be detached to enable the shaft to be inserted in its seat in the bearing clip 18, and the pin 22 engaged with the shaft through the recess 21 and the crank arm 25 connected to the shaft and to the pin 24.

The shaft 19 is provided with a turning knob 27, and may be of any required length, to locate the knob 27 at any convenient point.

It will be obvious that with a device thus constructed and applied, the damper 11 can be opened or closed or partly opened by simply rotating the shaft 19 by its knob 27. The stop pin 22 when in the bottom of the recess 21 holds the shaft from being turned a sufficient distance to move the damper be yond its horizontal or closed position, and

when at the opposite end of e recess the pin prevents the shaft from moving the damper beyond its full open position.

bear, over the member 13 and is secured in The dampers of the smoke fiues of ranges and the like are usually located at too high a point from the fioorand at too great a distance from the body of the range to be conveniently reached, but with the simple at tachment above described, the damper can be actuated from any desired distance or direction from the flue as will be obvious,by lengthening or shortening the shaft 19 and the rod 17.

The preferred embodiment of the invention is disclosed in the drawings and set forth in the specifications, but it will be understood that any modifications within the scope of the claims may be made in the construction without departing from the principle of the invention or sacrificing any of its advantages. c

Having thus described the invention, what is claimed as new is 1. A device of the class described comprising a bearing member adapted to be connected to a support and having a recess communicating with the interior thereof, a shaft rotative in said bearing member and having a crank arm directed laterally therefrom, a stop pin extending from said shaft and through said recess, a clip device adapted to be clamped to the turning element of a damper, and a rod connected respectively to said clip device and to said laterally directed crank arm.

2. A device of the class described comprising a bearing member adapted to be connected to a support and having a recess communicating with the interior thereof, a shaft rotative in said bearing member and having a crank arm directed laterally therefrom, a stop pin extending from said shaft and through said recess, and connecting means extending from said laterally directed crank arm and adapted to be coupled to the turning element of a damper.

3. A device of the class described compris ing abearing member adapted to be connected to a support, a shaft rotative in said bearing member and having a crank arm directed laterally therefrom, a clip device adapted to be clamped to the turning element of a damper, a rod pivotally connected to said clip device, a block slidable on said rod, a combined set screw and pin engaging said block and operating to adjustably clamp said block to said rod, said crank aim being movably coupled to said combined set screw and pm.

In testimony whereof I afiix my signature hereto.

JOHN W. MADDEN. 

